An apparatus for ultrasonic irradiation of the heart either when the chest is open after surgery or through the chest wall. It may also be used in conjunction with electrical defibrillation equipment or alone. The apparatus includes an EKG for detecting the heart beat, an ultrasonic generator and timing...http://www.google.co.uk/patents/US4651716?utm_source=gb-gplus-sharePatent US4651716 - Method and device for enhancement of cardiac contractility
